Global Patent Index - EP 1798793 A4

EP 1798793 A4 20080903 - ELECTROLYTE POLYMER FOR FUEL CELL, METHOD FOR PRODUCING SAME, ELECTROLYTE MEMBRANE, AND MEMBRANE ELECTRODE ASSEMBLY

Title (en)

ELECTROLYTE POLYMER FOR FUEL CELL, METHOD FOR PRODUCING SAME, ELECTROLYTE MEMBRANE, AND MEMBRANE ELECTRODE ASSEMBLY

Title (de)

ELEKTROLYT-POLYMER FÜR EINE BRENNSTOFFZELLE, VERFAHREN ZU SEINER HERSTELLUNG, ELEKTROLYTMEMBRAN UND MEMBRANELEKTRODENBAUGRUPPE

Title (fr)

POLYMERE ELECTROLYTIQUE POUR PILE A COMBUSTIBLE, PROCEDE DE FABRICATION DUDIT POLYMERE, MEMBRANE ELECTROLYTIQUE ET ENSEMBLE ELECTRODE A MEMBRANE

Publication

EP 1798793 A4 20080903 (EN)

Application

EP 05773609 A 20050816

Priority

  • JP 2005014953 W 20050816
  • JP 2004238460 A 20040818

Abstract (en)

[origin: EP1798793A1] To provide an electrolyte polymer for fuel cells, an electrolyte membrane, a membrane/electrode assembly for fuel cells excellent in the durability. An electrolyte polymer for fuel cells made of a perfluorocarbon polymer having ion exchange groups (which may contain etheric oxygen atoms), characterized in that the value calculated by dividing an absorption area S CH derived mainly from a C-H bond in the range of from 3,100 cm -1 to 2,800 cm -1 by an absorption area S CF derived mainly from a C-F bond in the range of from 2,700 cm -1 to 2,000 cm -1 , as measured by means of infrared spectrophotometry, is less than 0.005, an electrolyte membrane and a membrane/electrode assembly.

IPC 8 full level

H01M 8/02 (2006.01); C08F 14/18 (2006.01); H01B 1/06 (2006.01); H01M 8/10 (2006.01)

CPC (source: EP US)

C08F 8/12 (2013.01 - EP US); C08F 8/22 (2013.01 - EP US); C08F 8/26 (2013.01 - EP US); C08F 214/18 (2013.01 - EP US); C08J 5/2243 (2013.01 - EP US); H01B 1/122 (2013.01 - EP US); H01M 8/0289 (2013.01 - EP US); H01M 8/1023 (2013.01 - EP US); H01M 8/1039 (2013.01 - EP US); H01M 8/1067 (2013.01 - EP US); H01M 8/1088 (2013.01 - EP US); C08J 2327/12 (2013.01 - EP US); Y02E 60/50 (2013.01 - EP); Y02P 70/50 (2015.11 - EP US)

C-Set (source: EP US)

  1. C08F 8/12 + C08F 8/12 + C08F 214/18 + C08F 214/18
  2. C08F 8/26 + C08F 8/26 + C08F 8/12 + C08F 8/12 + C08F 214/262 + C08F 214/262
  3. C08F 8/22 + C08F 8/22 + C08F 214/18 + C08F 214/18
  4. C08F 214/262 + C08F 214/262 + C08F 214/182 + C08F 214/182

Citation (search report)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 1798793 A1 20070620; EP 1798793 A4 20080903; EP 1798793 B1 20120411; CA 2577710 A1 20060223; CN 101002356 A 20070718; CN 101002356 B 20101117; EP 2264818 A1 20101222; EP 2264818 B1 20120509; JP 5168903 B2 20130327; JP WO2006019097 A1 20080508; US 2007141427 A1 20070621; US 7838167 B2 20101123; WO 2006019097 A1 20060223

DOCDB simple family (application)

EP 05773609 A 20050816; CA 2577710 A 20050816; CN 200580027352 A 20050816; EP 10010208 A 20050816; JP 2005014953 W 20050816; JP 2006531805 A 20050816; US 67586307 A 20070216